{(n-Bu4N)2[Mo2O2S6Cu6Br4(4,4'-bipy)3]·0.5H2O}n的合成与晶体结构

Cluster coordination polymer {(n-Bu4N)2[Mo2O2S6Cu6Br4(4,4'-bipy)3]·0.5H2O)}n (4,4'-bipy=4,4'-bipyridine),has been synthesized and characterized by X-ray crystallography. The polymeric anion {[Mo2O2S6Cu6Br4(4,4'-bipy)3]2-}n is composed of secondary building units (SBUs) [MoOS3Cu3], Br atoms and 4,4'-bipy ligands. Two secondary building units [MoOS3Cu3] and a double parallel 4,4'-bipy ligands form an octanuclear rectangular metallamacrocycle with the dimension of 1.13×0.39 nm2, which is further connected by single bridging 4,4'-bipy ligands to form a 1D zigzag structure. Crystal data for compound 1: C62H97N8O2.50S6Br4Cu6Mo2,M=2 079.68, Triclinic, P1, a=0.982 40 (10) nm, b=1.293 70(10) nm, c=1.737 4(2) nm, α=97.810(10)°,β=101.390(10)°,γ=108.520(10)°, V=2.005 1(4) nm3, Z=2, Dc=1.722 g·cm-3, F(000)= 1039,μ (Mo Kα)=4.055 mm-1, the final R=0.040 7, wR2=0.097 2. CCDC: 236407.     

杯[4]芳烃衍生物对Pb2＋的液膜传输动力学

以3类含不同基团的杯[4]芳烃衍生物作为离子载体在H2O-CHCl3-H2O液膜传输体系下分别对Pb2＋进行液膜传输实验. 简要讨论了以杯[4]芳烃衍生物作为离子载体对Pb2＋液膜传输的动力学机理. 重点研究了不同载体种类, 载体浓度, 搅拌速度, 传输时间等因素对Pb2＋传输的影响. 实验结果表明: 以含Br原子的杯[4]芳烃衍生物和含S原子的杯[4]芳烃衍生物作为离子载体对Pb2＋有明显的传输效果. 可以用本文的动力学模型来描述整个传输体系的动力学特性.